Bentonite, also referred to as Montmorillonite, is one of the most effective and powerful healing clays. Bentonite Clay is a unique clay due to its ability to produce an “electrical charge” when hydrated. Upon contact with fluid, its electrical components change, giving it the ability to absorb toxins. Bentonite is known for its ability to absorb and remove toxins, heavy metals, impurities, and chemicals. This is a great all-purpose bar. It is designed for normal to oily skin. The bentonite clay is supposed to absorb surface skin oil without excessively drying the skin. Happy Bathing !!!